 /*******************************************************************************
  * Copyright (c) 2007 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  ******************************************************************************/
 package org.eclipse.ui.forms;

 import org.eclipse.swt.widgets.Control;

 /**
  * This interface computes the prefix of a message that is created in the
  * context of a control. Since messages are rolled up to the header in the
  * message manager, it is important to create a prefix to indicate the context
  * of a message in the form. Typically the prefix is computed by looking at the
  * label that preceeds the control, if present. Alternative providers may
  * include other text to further specify the location of the message.
  *
  * @see IMessageManager
  * @see IMessage
  * @since 3.3
  */
 public interface IMessagePrefixProvider {
     /**
      * Returns the computed prefix for the provided control.
      *
      * @param control
      * the control to provide the prefix for
      * @return the computed prefix
      */
     String getPrefix(Control control);
 }
